Locate the President.
Earn all 4 stars in the level.
Complete a level in less than 20 seconds.
Eject Coverton 5 times.
Score over 5,000 points in a level.
Find a hidden Alien Probe.
Complete 20 levels.
Play a total of 5 hours.
Earn 80 stars.
Earn 200 stars.
Freeze B.O.B.
Gather a grand total of 100,000 points.
Beat your previous score in a level.
Flip the world 20 times.
Complete all 50 levels.